GB666574A - Improvements in the use of saturable magnetic chokes as discharge devices - Google Patents

Improvements in the use of saturable magnetic chokes as discharge devices

Info

Publication number
GB666574A
GB666574A GB2961348A GB2961348A GB666574A GB 666574 A GB666574 A GB 666574A GB 2961348 A GB2961348 A GB 2961348A GB 2961348 A GB2961348 A GB 2961348A GB 666574 A GB666574 A GB 666574A
Authority
GB
United Kingdom
Prior art keywords
capacitor
inductance
load
transformer
network
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2961348A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WILLIAM SIMM MELVILLE
British Thomson Houston Co Ltd
Original Assignee
WILLIAM SIMM MELVILLE
British Thomson Houston Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by WILLIAM SIMM MELVILLE, British Thomson Houston Co Ltd filed Critical WILLIAM SIMM MELVILLE
Priority to GB2961348A priority Critical patent/GB666574A/en
Priority to GB2961448A priority patent/GB666575A/en
Priority to FR999500D priority patent/FR999500A/en
Priority to FR60534D priority patent/FR60534E/en
Priority to DEB11780A priority patent/DE859033C/en
Publication of GB666574A publication Critical patent/GB666574A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K3/00Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/45Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of non-linear magnetic or dielectric devices

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Generation Of Surge Voltage And Current (AREA)
  • Microwave Tubes (AREA)

Abstract

666,574. Changing wave-form. BRITISH THOMSON-HOUSTON CO., Ltd., and MELVILLE, W. S. Dec. 6, 1949 [Nov. 15, 1948], No. 29613/48. Class 38 (ii). A circuit for producing pulses of electrical energy in a load includes a multiple T-network of series inductances L1, L2, L3, and shunt capacitances C2, C3, the inductances having saturable cores and being so graded that the unsaturated value of each, other than that nearest the load-terminals, is substantially higher and the saturated value is substantially lower than the unsaturated value of the next inductance nearer the load, and a capacitor C1 connected to supply-terminals and adapted to be charged to supply energy to the circuit. When the voltage across capacitor C1 reaches a sufficient value, the reactor L1 becomes saturated and the charge is transferred to capacitor C2, this operation continuing to the end of the series when the charge is applied to the load. In each stage the time for transfer decreases, a sufficient number of stages being included to allow the saturated value of the final inductance to be negligible compared to the load in which the voltage is built up at an accelerated rate. In Fig. 1 the capacitance C3 is formed by a network having series inductance windings e and shunt capacitors c, The load may be the firing circuit of an ignition discharge valve, the network C3 being replaced by a single condenser. Unidirectional pulses may be supplied to the load by providing the inductance L1 with a biasing winding which is energized with direct current, alternatively direct current may be injected into the principal reactor winding through a suitable de-coupling circuit. The capacitor C1 may be charged from a source of sinusoidal voltage through an inductance of such value to afford a condition approaching resonance at the supply frequency, Fig. 3a (not shown). In Fig. 4 the capacitor Cl is charged through a saturable inductance L1 and the primary winding of a saturable-cored transformer T1, the secondary circuit of which includes capacitance C2 and the primary winding of a saturable cored transformer T2. The secondary circuit of transformer T2 includes network C3, a magnetron M being supplied from pulse transformer T3. The unsaturated primary inductance of transformer T1 is low compared to that of inductance L1 but high compared to its saturated value. The primary inductance of transformer T2 has an unsaturated value which is low compared to that of transformer T1 but high in relation to its saturated value. The transformers T1, T2, may be arranged to step up or down. The inductance L1 is preferably resonant with capacitor C1 at the supply frequency, and at voltage maximum on capacitor C1 the inductance L1 saturates, the capacitor discharging to charge capacitor C2. When the voltage on capacitor C2 is at a maximum, the core of transformer T2 saturates so that the network C3 is charged, and the load is energized when the network discharges. Fig. 5 (not shown), illustrates a circuit comprising a large number of stages each comprising a series saturable reactor and a parallel capacitor. In Fig. 6 (not shown), a four-stage circuit is used as a radar modulator, a step-up transformer giving the high voltage output required. A pulseshaping network of inductances and capacitances is connected across the load. Direct current bias may be applied to the cores of the saturable transformers or reactors to counter some of the effects of large line-directional flux impulses which occur during discharge through the windings. The cores of the inductances may be made of a material having a sharp magnetization characteristic, such as 50-50 cold-rolled nickel-iron. Specification 666,575 is referred to.
GB2961348A 1948-11-15 1948-11-15 Improvements in the use of saturable magnetic chokes as discharge devices Expired GB666574A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB2961348A GB666574A (en) 1948-11-15 1948-11-15 Improvements in the use of saturable magnetic chokes as discharge devices
GB2961448A GB666575A (en) 1948-11-15 1948-11-15 Improvements in pulse generating circuits
FR999500D FR999500A (en) 1948-11-15 1949-11-10 Pulse generators
FR60534D FR60534E (en) 1948-11-15 1949-11-15 Pulse generators
DEB11780A DE859033C (en) 1948-11-15 1950-10-03 Circuit for generating periodic electrical energy pulses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2961348A GB666574A (en) 1948-11-15 1948-11-15 Improvements in the use of saturable magnetic chokes as discharge devices

Publications (1)

Publication Number Publication Date
GB666574A true GB666574A (en) 1952-02-13

Family

ID=10294331

Family Applications (2)

Application Number Title Priority Date Filing Date
GB2961448A Expired GB666575A (en) 1948-11-15 1948-11-15 Improvements in pulse generating circuits
GB2961348A Expired GB666574A (en) 1948-11-15 1948-11-15 Improvements in the use of saturable magnetic chokes as discharge devices

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB2961448A Expired GB666575A (en) 1948-11-15 1948-11-15 Improvements in pulse generating circuits

Country Status (3)

Country Link
DE (1) DE859033C (en)
FR (2) FR999500A (en)
GB (2) GB666575A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2851616A (en) * 1955-12-27 1958-09-09 North American Aviation Inc Current limited magnetic pulse generator
US2871453A (en) * 1953-10-27 1959-01-27 Philco Corp Signal shaping system
DE972733C (en) * 1954-02-22 1959-09-17 Centre Nat Rech Scient Device for spark cutting on an alternating current source
DE1084370B (en) * 1956-03-15 1960-06-30 Siemens Ag Arrangement for the generation of short-term pulses of great energy
DE1111752B (en) * 1958-04-07 1961-07-27 Firth Sterling Inc Switching arrangement for electrical discharge machining with delayed charging of the memory
US3002113A (en) * 1956-03-26 1961-09-26 Gen Electric Pulse forming apparatus
GB2124434A (en) * 1982-07-21 1984-02-15 Simco Co Inc Controlled emission static eliminator
US5184085A (en) * 1989-06-29 1993-02-02 Hitachi Metals, Ltd. High-voltage pulse generating circuit, and discharge-excited laser and accelerator containing such circuit
CN116567906A (en) * 2023-06-26 2023-08-08 江苏神州半导体科技有限公司 Ignition circuit structure of plasma system and ignition protection method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE26027E (en) * 1958-10-31 1966-05-17 Direct-current charged magnetic modulator
CN111721984B (en) * 2020-05-12 2023-04-18 西北核技术研究院 Multi-parameter program-controlled adjustable double-exponential-wave pulse current injection device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2871453A (en) * 1953-10-27 1959-01-27 Philco Corp Signal shaping system
DE972733C (en) * 1954-02-22 1959-09-17 Centre Nat Rech Scient Device for spark cutting on an alternating current source
US2851616A (en) * 1955-12-27 1958-09-09 North American Aviation Inc Current limited magnetic pulse generator
DE1084370B (en) * 1956-03-15 1960-06-30 Siemens Ag Arrangement for the generation of short-term pulses of great energy
US3002113A (en) * 1956-03-26 1961-09-26 Gen Electric Pulse forming apparatus
DE1111752B (en) * 1958-04-07 1961-07-27 Firth Sterling Inc Switching arrangement for electrical discharge machining with delayed charging of the memory
GB2124434A (en) * 1982-07-21 1984-02-15 Simco Co Inc Controlled emission static eliminator
US5184085A (en) * 1989-06-29 1993-02-02 Hitachi Metals, Ltd. High-voltage pulse generating circuit, and discharge-excited laser and accelerator containing such circuit
CN116567906A (en) * 2023-06-26 2023-08-08 江苏神州半导体科技有限公司 Ignition circuit structure of plasma system and ignition protection method
CN116567906B (en) * 2023-06-26 2024-01-30 江苏神州半导体科技有限公司 Ignition circuit structure of plasma system and ignition protection method

Also Published As

Publication number Publication date
FR60534E (en) 1954-11-09
FR999500A (en) 1952-01-31
GB666575A (en) 1952-02-13
DE859033C (en) 1952-12-11

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